CN1622788A - Surgical tool - Google Patents

Abstract

A surgical tool comprising an elongate moulded plastic handle (2) and a tool member (7) having a tip portion (43), the handle (2) defining an elongate slot (11,20,34) which is configured to receive and mount the tool member (7) therein, and having an aperture (5) at one end (6) such that the tip portion (43) of the tool member (7) received in the slot (11,20,34) protrudes from the handle (2) through the aperture (5).

Description

surgical tools

The present invention relates to a surgical tool, and more particularly, to a hand-held surgical tool such as pliers or tweezers, scissors, flat-nosed pliers, scalpel, probe, etc., such as used by ophthalmologists and plastic surgeons. Used by doctors during surgical or microsurgical procedures.

Currently, there are thousands of different hand-held surgical or microsurgical tools that are used to perform various procedures on the human or animal body. Typically, each tool has a functional point integrally formed with a shank of metal or other similar material. For example, pliers or tweezers are typically formed from two pieces of metal that are welded together at one end to form an integral handle at the other end with opposable prongs, usually spaced apart from each other . When the arms are squeezed, they deform elastically so that the prongs together grip and/or manipulate tissue located between them.

The problem with the types of tools currently in use is that the market has multiple varieties of disparate handle designs, weights and feel, so the surgeon must become proficient and comfortable with many different instruments so that he/she can use them in their particular specialty. fully competent in the field. Even though surgeons often only use one grouping of thousands of tools available, for example, an ophthalmologist will only use those tools with the pointed points needed for eye surgery such as cataract surgery, they still find that most of these tools Most shanks are quite different from each other. This situation will be exacerbated when the surgeon uses a range of tools manufactured by the same company, but not all tools. It is thus necessary for the surgeon to be proficient in the weight, feel and design of the tools manufactured by each company, in addition to being proficient in each individual tool produced by that company. This is obviously a disadvantage where surgery is involved where there is little room for error and fine control and where familiarity with all surgical equipment is important.

Microsurgical tools are usually manufactured from some high-grade material such as titanium metal in order to ensure that they have a reasonable service life despite repeated sterilization and handling. Although some tools are discarded after a single use, many hospitals are reluctant to do so with conventional surgical tools because of their high cost. When the shank and tool point are integrally formed, each tool is more expensive because the shank is made of the same material as the tool point. Although tools can be made from other materials such as stainless steel, they deteriorate more quickly and must be thrown away immediately. This problem can be reduced by making the shank and tool point separately from different materials. However, the parts must then be welded or otherwise fastened together with great precision and care, which is difficult and time consuming. Thus, as a result of manufacturing the shank and the tool point separately from each other, no significant cost reduction is achieved, since once they are manufactured there are problems of joining the elements.

It is an object of the present invention to overcome and/or reduce the problems with conventional surgical and/or microsurgical tools described above.

In accordance with the present invention there is provided a surgical tool comprising an elongate molded handle and a substantially flat elongate tool member, the elongate molded handle having a main body part and a base part, while the above-mentioned tool member has a pointed part, the shank defines an elongated slot formed by corresponding channels in the body part and base part, each channel is machined to accommodate An edge of the tool member such that the tool member lies in a plane substantially at right angles to a plane along which the body portion and the base portion join.

The tool member must be adequately supported within the shank. By providing a gap formed by a corresponding channel in both the body part and the base part, the tool can be supported along at least a part of its length disposed inside the handle, thus preventing any lateral movement of the tool.

In one embodiment, an actuator for controlling the tool member is mounted in an elongated aperture in the handle. The actuator controls pliers, tweezers and flat nose pliers. It is contemplated that other types of tool members that do not require an actuator could also be mounted in the handle, in which case the actuator would only assist in retaining the tool member in the handle and perform no other function.

Preferably, the actuator comprises a lever comprising a first end fixedly mounted within an aperture in the body portion and a second end which when a pressure is applied to The second end is deflected into the handle relative to the first end and the body portion toward the base portion when on.

Suitably, a bridge divides the aperture in the body portion into two separate openings and a region of the lever between the first end and the second end, said region extending across the bridge. This enables the lever to deform in the region where it extends across the bridge when the second end of the lever is decompressed, the first end being fixedly mounted in the aperture of the body part.

Preferably, the first end of the lever includes an elongate connector thereon, said connector being dimensioned to fit snugly in an opening between the body portion and the bridge to mount the lever To the main body, the area where the lever extends across the bridge thus deforms as pressure is applied to the second end of the lever.

The connector may be longer than the length of the opening and may advantageously be formed with a cutout in the underside of the body portion extending from the opening to accommodate the portion of the member extending outside the opening.

Advantageously, the upper surface of the lever is contoured to be flush with the outer surface of the body portion.

The tool member preferably comprises pliers or tweezers with two opposing arms extending from an entire hub body to a pointed portion at the distal end of each arm, the arms being elastically deformable so that each The tip of the arm touches.

In a preferred embodiment, one arm is received and mounted in a channel in the base portion and the other arm is received and mounted in a channel in the body portion, while the pointed portion of each arm extends from the handle through the aperture. out.

An extension of the channel formed in the body part may conveniently be formed in the lever so that the arm received in the channel in the body part is also received in the channel in the lever so that when pressure is applied to the second end of the lever When going up, push the arm held in the channel in the lever towards the other arm so as to contact the end of the pointed part, and when the pressure is released, the elasticity of the arm and lever pushes it back towards its original position. It will be appreciated that only one arm moves relative to the handle towards the other arm and not both arms as is the case with conventional pliers and tweezers. The fact that one arm remains fixed relative to the shank provides the advantage that it is much easier to close the tool tip for gripping very small items with high accuracy, since the fixed tool tip can be positioned and the other tool tip passed through The trigger of the lever is towards it.

Preferably, an aperture is formed in the base portion by an aperture protruding through the pointed portion, the channel of said base portion terminating at the aperture.

In a preferred embodiment, the base portion includes an integrally formed upstanding nose section, said nose portion defining the end of a shank in which the aperture is formed.

Preferably, one end of the body portion includes a recess for receiving the nose section of the base portion when the body portion and base portion are joined together.

The base portion and the body portion include cooperating means to enable the body portion to be attached to the base portion.

Advantageously, the cooperating means comprise a pair of elongate rails depending from the length of the main body portion for engaging respective respective recesses in the base portion.

In a preferred embodiment, the tool member is a single metal element formed from a flat sheet by stamping, punching, laser cutting, water cutting, wire erosion or machining or the like.

The handle is preferably contoured so that it can be held in a pen-like grip between the thumb and forefinger and allow fine fingertip control. More preferably, the main body portion and the lever are raised in the region of the second end of the lever on which pressure is applied, so as to form a smooth ledge so that the surgeon can clearly locate the lever on which pressure must be applied Partially come up to operate the tool components.

Preferably, the surgical tools of the present invention can be sterilized for repeated use. However, since the tool member is now a much smaller element because it is mounted in the plastic handle rather than being integral with a handle made of the same material, the tool of the present invention is much cheaper to manufacture. It is therefore conceivable that the tool of the invention will be discarded after one use due to the relatively low manufacturing costs. This is a particular advantage because it eliminates the need to sterilize tools that may not be fully effective. It has also recently become apparent that VCJD (the human form of mad cow disease) is not completely destroyed as a result of standard disinfection procedures. Not only does this mean that the same tool used to perform surgery on different people can infect them all, but it can also cause cross-contamination of other tools that are cleaned in the same cleaning and disinfection process.

Referring now to the drawings, some embodiments of the invention are illustrated, by way of example only, in which:

Figure 1A is a perspective view of a surgical tool according to the present invention;

Figure 1B is a side view of the surgical tool shown in Figure 1;

Figure 2A is a perspective view of the base portion of the surgical tool handle shown in Figures 1 and 2;

Figure 2B is a top view of the base portion shown in Figure 2A;

Figure 2C is a side view of the portion of the base shown in Figures 2A and 2B;

Figure 3A is a perspective view of the main body portion of the surgical tool handle shown in Figures 1 and 2;

Figure 3B is a top view of the main body shown in Figure 3A;

Figure 3C is a side view of the body portion shown in Figures 3A and 3B;

Figure 4A is a perspective view of a lever;

Figure 4B is a bottom view of the lever shown in Figure 1;

Figure 4C is a side view of the lever shown in Figures 4A and 4B;

Figure 5 is an exploded view of the surgical tool shown in Figures 1 and 2;

Figure 6 is a longitudinal perspective cross-sectional view of the surgical tool shown in Figure 1;

Figure 7 is a perspective view showing a tool member mounted within the handle of Figures 1A, 1B and 6;

8A-8C are respectively a side view of a second embodiment of a surgical tool according to the present invention, a side sectional view taken along line A-A in the top view, and a top view;

Figures 9A-9C are a side view of the surgical tool shown in Figures 8A-8C, respectively, but with a tool member fixed rather than operatively mounted in the handle, one along line A-A in the top view A cutaway side view, and a top view;

10A-10C are a side view of a third embodiment of a surgical tool according to the present invention, a side sectional view taken along line A-A in the top view, and a top view, respectively; and

11A and 11B illustrate some examples of the many different tool components that may be used with surgical tools according to some embodiments of the present invention.

Referring now to the drawings, there is shown a surgical tool 1 according to one embodiment of the present invention, said surgical tool 1 comprising a handle 2 formed by a first semi-cylindrical base portion 3 and two elongated halves of a second semi-cylindrical body portion 4 are formed. An aperture 5 is provided in the end 6 of the handle 2 from which a part of a surgical tool member 7 mounted in the handle 2 protrudes. An actuator or lever 8 is mounted in an aperture 9 in the body part 4 and is held flush with the shaped outer surface of the body part 4 .

The base portion 3 will now be described in more detail with reference to FIGS. The open part stands up. The aperture 5 is in the form of an arcuate slot in the nose portion 10 . Extending rearwardly from the aperture 5 and accessible through the aperture 5 is a longitudinal central channel 11 which extends about half the length of the base portion 3 . The channel 11 has two raised side walls 12 for a short section directly behind the aperture 9, the side walls 12 terminating in a shoulder 13 at which the two sides drop to the side wall 14 below. For obvious reasons, the two raised side walls 12 provide a channel 11 that is deeper than the channel 11 extending in the lower side wall 13 .

A pair of elongated grooves 15 are formed on each side in the base portion 3 parallel to the intermediate channel 11 . These grooves 15 extend substantially the entire length of the base part and enable the connection of the base part 3 to the body part 4, as will be explained.

The body part 4 will now be described with reference to Figures 3A-3C, from which it can be seen that it has a recess 16 to accommodate a nose-shaped part 10 erected from the open surface of the base part 3 when the elements are assembled. . The opposite end has a part spherical integrally formed cap 17 which closes the end of the handle 2 opposite the end 6 in which the aperture 5 is formed. An elongated opening 18 is formed in the body part 4 into two parts 18a, 18b by a connecting member or bridge 19 to receive and mount the lever 8 therein, as will be explained. On the underside of the body part 4, a longitudinal intermediate channel 20 extends from the groove 16 to the elongated opening 18b. At the opposite end of the opening, a cutout 21 or cavity is formed in the body part 4 .

A pair of rails 22 are suspended on the underside of the body portion 4 along the edges of the body portion 4 . These rails 22 co-operate and engage in grooves 15 in the base part to connect the base part 3 and the body part 4 together.

A channel 23 having an aperture 24 at each end is also formed in the body portion 4 adjacent the integrally formed cap 17 . Fitting into the groove 23 is a member 25 (see FIG. 5 ) having two pins 26 connected by a head 27 while each pin fits in a hole 24 . Member 25 may be colored differently from the rest of the handle to indicate the type of tool member mounted therein. Alternatively, or in addition, there may be a logo or other information on the header 27 . Member 25 can be easily removed and/or replaced if desired.

The lever 8 will now be described with reference to Figures 4A-4C. The lever 8 is an integral plastic element having a first end 30 for connecting the lever 8 to the body part 4 and a second end 31 which can Pressure is applied thereto in order to drive the tool member 7 located in the handle 2 . The lever 8 has an upper body portion 32 extending between the first and second ends 30, 31 and having a widened raised portion to form an operating button 33 at the second end 31 . Extending downwardly from the upper body portion 32 in the region of the second end 31 is a pair of parallel elongated wall portions 34 defining a channel 35 therebetween. Wall portion 34 extends rearwardly toward first end 30 , but terminates approximately two-thirds of the way along upper body portion 32 . A retainer 36 for connecting the lever 8 to the body part 4 is provided on the underside of the first end 30 and protrudes slightly beyond the end of the upper body part 32 so as to form a tab 37 . Between the spacer 36 and the two parallel elongated walls 34 is formed a gap 38 having a length similar to the length of the connection or bridge 19 formed in the main body portion 4 .

Many different surgical tool components can be mounted within the handle 2 . An example of a tool component 7 is shown in FIG. 7 . This tool member 7 replaces conventional pliers or tweezers and has a pair of opposing elongated arms 40a, 40b extending from a hub 41 . The prongs 42 of the arms 40a, 40b at the ends of the pronged portions 43 can be closed together by squeezing them in the direction indicated by the X. Facing cooperating protrusions 44 are formed on each arm 40a, 40b which engage to prevent excessive pressure from being applied to the arms 40a, 40b when the prongs 42 are closed. The tool member 7 is formed in one part from a flat metal plate, such as titanium, and can be manufactured at a lower cost than the currently practiced metal turning methods. These processing methods may include punching, stamping, laser cutting, hydraulic cutting, wire erosion or a machining method. Furthermore, when the tool member 7 and shank 2 are formed from different materials as a single element, the use of high-grade expensive materials can be kept to a minimum, the tool member 7 being much smaller than conventional tools with an integrally formed shank.

Assembly of the tool will now be described with reference to the exploded view of FIG. 5 . First a selected tool member as shown in FIG. 7 (but not shown in FIG. 5 ) is attached to the base part 3 by passing the tool tip through the aperture 5 and by pressing the tool member into the channel 11 , so as to thereby retain substantially all of it within the base portion 3 along its length. Next, the main body part 4 is lowered onto the base part 3 in the direction indicated by the arrow A, so that each bead 22 is located in the groove 15 in the base part 3 . A groove 16 in the body part 4 surrounds the nose part 10 and a cap 17 closes the end of the handle 2 remote from the aperture 5 . It will be appreciated that during this step the portion of the tool member 7 which is not held in the channel 11 in the base part is located in the channel 20 in the body part 4 . The main body portion 4 and the base portion 3 may be sealed and bonded together with a resin or an adhesive material.

It is now attached to the body part 4 by lowering the lever 8 in the direction of the arrow B into the aperture 9 . The tabs 37 on the retainer 36 are located within the cutouts 21 in the body portion 4, and the retainer 36 fits snugly in the aperture 19a. The connection or bridge 19 is located in the gap 38 between the wall portion 34 and the location 36 . The channel 34 formed by the wall portion 34 forms an extension of the channel 20 in the body portion 4 and also accommodates a part of the tool member 7 and the corresponding channels 11, 20, 34 in the base portion, body portion and lever 8 together, in the handle A slot is formed to accommodate a tool member.

The side cut perspective view of Fig. 6 shows how the tool member 7 of Fig. 7 is held in the channels 11, 20, 34 formed by the base part 3, the body part 4 and the lever 8, respectively. It will be appreciated that the tool is a tight sliding fit in the channel 11 in the base part 3 and in the channel 34 in the lever 8 and is thereby securely retained. Channel 20 is slightly wider than channels 11, 34 for reasons that will become apparent. Since the tool 7 is supported in the channels 11 , 20 , 34 along its substantially entire length in the handle 2 , lateral movement of the tool 7 is prevented. This is especially important in the case of the tweezers or pliers tool shown in Figure 7, since any lateral movement of one arm 40a relative to the other 40b will cause the prongs 42 to be out of alignment. It will be appreciated that the raised side walls 12 of the channels 11 provide additional lateral support for the tool components in the area directly behind the aperture 5 .

The operation of the surgical tool 1 having the tool member 7 mounted therein will now be explained with reference to FIG. 6 . When pressure is applied to the operating button 33 in the direction indicated by the arrow Y, the upper portion 32 of the lever 8 is deformed in the region extending beyond the connecting portion 19 and is deflected inwardly towards the base portion 3, due to the aperture 19a As a result of the engagement of the central retainer 36 and the tab 37 of the notch 21, the first end 30 of the lever 8 is securely clamped. When the arm 40 a of the tool member 7 is accommodated in the channel 34 , the arm 40 a is pushed in the direction of the other arm 40 b, thus closing the tool tip 42 . When the pressure on the operating button 33 is released, the resilience of the arm 40a and that of the lever 8 return it to its original position, thereby causing the tool point 42 to separate. It will be appreciated that the arm 40a moves out of the channel 20 in the body part 4 when the arm 40a is moved towards the other arm 40b. Accordingly, arm 40a has a looser fit in channel 20 by making it wider than channels 11,34.

It will be appreciated that the outer surfaces of the base portion and body portions 3, 4 are rounded in order to provide a comfortable gripping surface. The outer surface of the body part 32 of the lever 8 is also rounded and fitted flush with the outer surface of the body part 4 . Handle 2 is ergonomically designed to fit between the thumb and forefinger in a pen-like grip for fine control of Tool 1 .

A second embodiment of a surgical tool according to the present invention will now be described with reference to FIGS. 8A-8C. This embodiment is similar to the first embodiment, and therefore those same parts will not be described again. In this embodiment, the surgical tool includes a handle 50 having a similar construction to the handle 2 of the first embodiment and supporting a tool member 51 in the same manner. However, the two elongated halves 52 , 53 of the handle 50 are formed in such a way that a cavity 54 is produced in a region behind the tool component 51 . The end 55 of the tool member 51 is held in a channel similar to the channel 11 of the first embodiment. However, the tool member is prevented from sliding into the cavity 54 by a frangible wall portion or stop 56 upstanding from the elongated half 53 of the handle 50 . The end of the tool member 51 is in contact with the frangible wall portion 56, as best shown in the side sectional view of Figure 8B.

When the surgeon is finished with the tool, the tool member 51 can be retracted inside the handle 50 for safe disposal of the entire tool. Retraction of the tool member 51 may be accomplished by firmly tapping a surface of the tool member 51 with sufficient force to disengage the detent 56 . The tool member 51 is then allowed to slide freely into the cavity 54 in the direction of arrow A in FIG. 8B.

Figures 9A-9C show the same surgical tool and handle 50 as the second embodiment described with reference to Figures 8A-8C. In this embodiment, however, the handle 50 shows another type of tool member 60 mounted therein. This tool member 60 is of the fixed type, by which it is meant that it cannot be operated by actuating a lever when required with tweezers or pliers like those described with reference to FIG. 7 . An example of such a tool member is a probe or scalpel. The lever 61 shown in this embodiment is therefore superfluous and serves only to hold the tool member 60 firmly within the handle 50 .

10A-10C show another embodiment in which the actuator or lever 8 described with reference to the first embodiment is omitted and the tool member 70 is held between the two elongate halves 71 , 72 of the handle 73 . It should be understood that the handle of this embodiment can only be used with fixed type tools.

Figure 11A shows examples of 11 different tool components that may be installed in the handle of any of the embodiments of the present invention. FIG. 11B shows examples of nine different fixation types of tool components that can be selectively installed in the handle of any of the embodiments of the present invention.

Clearly, the present invention provides the surgeon with a customary handle shape capable of holding all types of instrument tool tips, and certain embodiments of the present invention also provide for The device retracts into the handle, thus reducing the risk of injury or contamination.

It will be apparent to those skilled in the art that many modifications or variations of the invention fall within the scope of the following claims and that the above description should be considered as that of some preferred embodiments only.

claims

(Amended in accordance with Article 19 of the Treaty)

1. A surgical tool comprising an elongate molded handle having a body portion and a base portion and a substantially flat elongate tool member, the tool member having A pointed portion, body portion and base portion are fixed relative to each other so as to form a shank when the tool is assembled, the shank defining an elongated slot formed by corresponding channels in the body portion and base portion, each channel being An edge of the tool member is machined so that the tool member lies in a plane substantially at right angles to a plane along which the body portion and the base portion are secured relative to each other.

2. The surgical tool of claim 1, wherein an actuator for controlling the tool member is mounted in the elongated aperture in the handle.

3. The surgical tool of claim 2, wherein said actuator includes a lever having a first end and a second end, said first end being fixedly mounted to the body portion The second end is deflectable into the handle relative to the first end and the body portion toward the base portion when a pressure is applied to the second end.

4. The surgical tool of claim 3, wherein a bridge divides the aperture in the body portion into two separate openings, and the lever crosses the bridge at an area between the first end and the second end. file extension.

5. The surgical tool of claim 4, wherein the first end of the lever includes an elongated connector thereon, the connector being dimensioned for a snug fit on the body part and the bridge so that the lever is mounted to the body part such that as pressure is applied to the second end of the lever, the lever extends across the bridge to deform in the region.

6. The surgical tool according to claim 5, wherein said connecting member is longer than the length of the opening, and a cutout is formed on the underside of the body portion extending from the opening to accommodate said connecting member extending to the part outside the opening.

7. A surgical tool according to any one of claims 3-6, wherein the upper surface of the lever is contoured so as to be flush with the surface of the body portion.

8. A surgical tool according to any one of the preceding claims, wherein said tool member comprises forceps or tweezers having two opposing arms, said two opposing arms at each

Claims (23)

1. Surigical tool, it comprises that an elongated molded handle and one are flat elongated tool component basically, described molded handle has a main part and a base part, and described tool component has a pointed portion, described handle limits an elongated gap, described elongated gap is formed by corresponding passage in main part and the base part, each passage all is processed into an edge that can hold tool component, make tool component be arranged in a plane, described plane meets at right angles along the plane that it engages basically with main part and base part.

2. according to the described Surigical tool of claim 1, it is characterized in that a kind of actuator that is used for the control tool member is installed in the elongated porosity in the handle.

3. according to the described Surigical tool of claim 2, it is characterized in that, described actuator comprises a lever, described lever has one first end and one second end, described first end is fixedly mounted in the interior hole of main part, and described second end can deflect in the handle towards the base part direction with respect to first end and main part when applying a pressure to this second end the time.

4. according to the described Surigical tool of claim 3, it is characterized in that a bridgeware is divided into two openings that separate to the hole in the main part, the zone of lever between first end and second end crossed bridgeware and extended.

5. according to the described Surigical tool of claim 4, it is characterized in that, first end of described lever comprises an elongated connector thereon, described connector is processed into certain size, so that in the opening of snug fit between main part and bridgeware, so that lever is installed on the main part, make that along with on second end that pressure is applied to lever the zone that described lever is crossed the bridgeware extension deforms.

6. according to the described Surigical tool of claim 5, it is characterized in that the length of described connector ratio open is long, and form an otch, extend to the outer part of opening so that hold described connector at the downside of the main part of extending from opening part.

7. according to one of them described Surigical tool of claim 3-6, it is characterized in that the upper surface of lever is processed into certain profile, so as with the flush of main part.

8. according to each described Surigical tool of aforementioned claim, it is characterized in that, described tool component comprises pliers or the tweezers with two relative arms, described two relative arms extend on the pointed portion from whole hub body at the far-end of each arm, described each arm elastically deformable is so that contact the pointed portion on each arm.

9. according to the described Surigical tool of claim 8, it is characterized in that, an arm held and be installed in the passage in the base part, and another arm held and be installed in the passage in the main part, the pointed portion of described arm is passed hole and is stretched out from handle simultaneously.

10. according to the described Surigical tool of claim 9, it is characterized in that, extension of formed passage forms in lever in main part, so that the arm that is contained in the main part internal channel also is contained in the interior passage of lever, thereby when pressure being put on second end of lever, the arm that is retained in the lever internal channel is pushed away towards the direction of another arm, so that pointed portion is contacted, when pressure was removed, the resilience of arm and lever back into described arm in its home position.

11. each the described Surigical tool according to aforesaid right requires is characterized in that the tool tip head part is passed its hole that stretches out and formed in base part, the passage in the described base part in the slit stops at the hole place.

12., it is characterized in that described base part comprises an integrally formed nose shape segmentation of holding up according to the described Surigical tool of claim 11, the end of the handle that described nose shape segmentation qualification hole forms therein.

13., it is characterized in that an end of main part comprises a groove according to the described Surigical tool of claim 12, so that hold the nose shape segmentation of base part.

14. each the described Surigical tool according to aforesaid right requires comprises the co-operating device, so that main part is connected on the base part.

15., it is characterized in that described co-operating device comprises a pair of elongated track according to the described Surigical tool of claim 14, described track is suspended under the length of main part, is used for engaging with the base part corresponding grooves.

16. each the described Surigical tool according to aforesaid right requires is characterized in that, described tool component is the bulk metal element that forms by punching press, punching, cut, waterpower cutting, line erosion or machined with a kind of flat board.

17. each the described Surigical tool according to aforesaid right requires is characterized in that handle is processed into certain profile, clamps so that make it can be held in a kind of lip pencil between thumb and forefinger, and can carry out accurate finger tip control.

18. each the described Surigical tool according to aforesaid right requires is characterized in that described handle limits a cavity and a frangible wall segmentation within it, slips into cavity so that prevent tool component.

19., it is characterized in that described frangible wall is shaped according to the described Surigical tool of claim 18, with box lunch in a longitudinal direction towards handle when tool component applies power, the fracture of frangible wall is so that make in the tool component withdrawal cavity.

20., it is characterized in that described base part or main part are painted according to the described Surigical tool of claim 17, so that expression is contained in the tool component type in the handle.

21. each the described Surigical tool according to aforesaid right requires is characterized in that described instrument can be sterilized for repeated use.

22. each the described Surigical tool according to aforesaid right requires is characterized in that described molded handle forms with a kind of plastics.

23. one kind basically as top with reference to the described Surigical tool of each accompanying drawing.

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